'Sherlock' Season 4: Assassins, babies and Moriarty?

'Sherlock' Season 4: Assassins, babies and Moriarty?

Now that "Sherlock" Season 3 has come to an end, it's time to speculate on the nature of Season 4. Sure, fans may not get to see new episodes for a year or two, but there are plenty of intriguing ideas for what the next season might look like.Baby WatsonConsidering how pregnant Mary (Amanda Abbington) was by the "Sherlock" Season 3 finale, it's safe to say that there will be a new addition to the Watson family when the show returns.The finale gave away that this child will be a girl -- and not named Sherlock -- but how old will Baby Watson be? "Sherlock" has, for the most part, followed real time in its gaps between seasons. Season 3, for example, began about two years after Season 2 ended, a time span that echoed reality quite well. On the other hand, Season 3 encompassed more than a year of time: It was late...